Introduction

The "Logresse" is a 3D printer based on Irobri's P3-Steel, a rework of the Twelve Pro, itself being a redesign of Josef Prusa's I3.

P3-Steel's main frame structure, built from laser-cut 3mm steel ensures excellent rigidity and restricts the use of printed plastic parts.

The Logresse takes all these benefits, with improved rigidity. By additional metal parts, in particular those of the X axis and the carriage, it further reduces the plastic parts. It also provides additional room and ready-made holes to mount the power supply, various electronics, etc...

Downloads

For the impatients, here are a few files to download :

Assembly instructions (PDF)

The detailed assembly manual for the 3.0 version, as of today in french, but with plenty of nice views:

See the 'list.txt' file for parts list and quantities
You can figure out what it looks like with the OpenSCAD 3D preview, file Logresse..scad located in the SCAD/ directory.

Hardware

Chassis

Parts Preview

The main ingredient of the machine is the chassis. The chassis can be cut into ordinary steel, galvanized steel, or stainless steel sheet.
Since the laser cutting is quite expensive, it is advisable to group to reduce the cost.

Rectified steel bars (Stubs)

As there are only three millimeters to support them, they must be cut squarely, with no (or very little) chamfer.